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• facebook app development

  - by musoNic80

  I have always developed my projects using MAMP locally and once done simply uploaded everything to a live server. However, I'm wanting to integrate some FB functionality in my current project and I believe I'm correct in saying that it is not possible to fully test FB integration locally. My problem is I don't want to release the project I'm working on until it's finished (or at least nearly finished!) by placing it on a live server. I don't even want people to see a login screen or anything. Is there a way I can upload everything to my domain for testing purposes but prevent anyone apart from me from accessing the site?

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• Can Spring understand @Inject replacing Weld as a JSR-299 implementation?

  - by Thorbjørn Ravn Andersen

  I have noticed from several web pages that apparently Spring 3.0 supports @Inject from JSR-330. As we would really like to use JSR-299 syntax for dependency injection in our libraries for both web apps and stand-alone applications, and have alternatives to Weld, it would be nice if Spring could do this. Being a novice to Spring, I tried downloading the Spring Framework distribution and put all jars on the Eclipse build path. No Inject annotation so my existing test project using Weld did not compile. Can this be done with Spring? What do I need to do to get it running? (I am aware that Guice eventually will support this too. It is only in SVN for now, and if there is an official Spring release which can, that would be better.)

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• Sound Manager Classes for Windows (C# or C++ .Net 2.0)

  - by Yakov

  Hi guys! I need some classes for playing short wav sounds, this classes would load this wav files into memory when an instance created, play sounds in background when needed, release this wav files from memory when an instance disposed. How can I do this on C# for windows (.Net 2.0)? (Win API's sndPlaySound, OpenAL or may be any wrapper) Ideally I would love to find an exist solution that simple and able to solve my task. Do you know any solutions for this issue? Thankx for your time.

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• Android remote code loading

  - by sehugg

  I am developing a library for Android that requires frequent updates from a central server. I was thinking how nice it would be if my library could update itself -- or if I could just release a bootstrap library that downloads the target library when the app is installed. I see this class in 1.5 called "DexClassLoader" but there seems to be precious little on the web besides the API docs. Has anyone used this successfully for the scenario which I described? Also, do the terms of the Android Market permit such a thing?

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• How can I program ksh93 to use bash autocompletion?

  - by Norman Ramsey

  In a comment in response to a shell question, user tinkertim said that it was easy to hack ksh to use the bash autocompletion library. I would like nothing better than to use bash autocompletion with AT&T ksh93. How can this be done? ksh93 has a new release several times a year, so I am looking for a solution that does not involve modifying the source code. ksh93 can link new C modules dynamically and also is highly programmable (I run a ksh function at every keystroke), so modifying the source should not really be necessary. Note: I am not talking about filename autocompletion, which is easy to do in ksh. I'm talking about all the other yummy autocompletion stuff that bash does, like autocompletion options for nmh commands or autocompleting Mercurial commmands. Stuff like that.

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• NSSortdescriptor, finding the path to the key I wish to use for sorting.

  - by RickiG

  Hi I am using an NSSortdescriptor to sort a collection of NSArrays, I then came across a case where the particular NSArray to be sorted contains an NSDictionary who contains an NSDictionary. I would like to sort from the string paired with a key in the last dictionary. This is how I would reference the string: NSDictionary *productDict = [MyArray objectAtIndex:index]; NSString *dealerName = [[productDict objectForKey:@"dealer"] objectForKey:@"name"]; How would I use the dealerName in my NSSortdescriptor to sort the array? NSSortDescriptor * sortDesc = [[NSSortDescriptor alloc] initWithKey:/* ? */ ascending:YES]; sortedDealerArray = [value sortedArrayUsingDescriptors:sortDesc]; [sortDesc release]; Hope someone could help me a bit with how I go about sorting according to keys inside objects inside other objects:) Thank you.

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• Collaborative kernel development

  - by Raffo

  Hi, I have to develop a patch for the linux kernel (2.6) for an university course I'm attending. I have to develop this patch with a friend of mine and we need to edit the same files on our computers (2-3 PCs). So, we want to use something like a collaborative editor and/or a version control system. The problem is that we never used something like that and that we cannot release our software as open source till we take the exam. Obviously, we're using linux. I'm here to ask you suggestions in order to manage our work in the best way. Thank you

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• Using a named system semaphore as an event to trigger something in another process.

  - by jbraz

  I have a thread that runs all the time: private void DoSomeStuffThread() { Semaphore sem = new Semaphore(0, 3, "sem_DoStuff"); sem.WaitOne(); do { //do some stuff } while (sem.WaitOne()); } I want to be able to only execute the stuff in the do block when something from another process says so. I am trying to use the "sem_DoStuff" named system semaphore to allow this to happen. The code that gets executed in my other process: public string DoStuff() { try { Semaphore sem = Semaphore.OpenExisting("sem_DoStuff"); sem.Release(); } catch (Exception e) { return e.Message; } } So, the idea is that when DoStuff gets called, the semaphore gets released, and DoSomeStuffThread stops waiting, executes what is in the do block, and then waits for DoStuff again before it is getting called. But, when DoStuff gets called, I'm getting the exception 'No handle of the given name exists.'. What am I doing wrong? Thanks.

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• Textures loaded with NSOperation are blank

  - by Omega

  So I call this method: -(void)beginExecution { NSOperationQueue *queue = [NSOperationQueue new]; NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(execute) object:nil]; [queue addOperation:operation]; [operation release]; } Which triggers this: -(void)execute { [[CCSpriteFrameCache sharedSpriteFrameCache]addSpriteFramesWithFile:@"MyTexture.plist"]; loaded = YES; // This tells me whenever loading is done. } However, when I create a sprite and try to use the texture MyTexture.png, the sprite is a blank canvas. Why is that?

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• How to extract the actual NSString from json object as NSArray

  - by Toran Billups

  I'm working with a large set of json and really just need the NSString representation of what's inside the NSArray -including all the { } My question is this - is their a better way than simply looping through each NSArray inside the main NSArray and outputting the description one by one? ie- the below is a start to this process but it's very brittle meaning I need to know each item inside the hat {} and this isn't something I actually care about. I just need the json string to move forward. The working code is below (thank you in advance!) NSString* responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; [responseData release]; NSArray* json = [responseString JSONValue]; NSArray* item = [json valueForKeyPath:@"d.data"]; NSArray* hatjson = [item objectForKey:@"hat"]; NSMutableString * result = [[NSMutableString alloc] init]; for (NSObject * obj in hatjson) { [result appendString:[obj description]]; } NSLog(@"the hat json is .. %@", result);

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• Rapid spectral analysis of audio file using Python 2.6?

  - by Ephemeralis

  What I want to do is to have a subroutine that analyses every 200 milliseconds of a sound file which it is given and spits out the frequency intensity value (from 0 to 1 as a float) of a specific frequency range into an array which I later save. This value then goes on to be used as the opacity value for a graphic which is supposed to 'strobe' to the audio file. The problem is, I have never ventured into audio analysis before and have no clue where to start. I have looked pymedia and scipy/numpy thinking I would be able to use FFT in order to achieve this, but I am not really sure how I would manipulate this data to end up with the desired result. The documentation on the SpectrAnalyzer class of pymedia is virtually non-existant and the examples on the website do not actually work with the latest release of the library - which isn't exactly making my life easier. How would I go about starting this project? I am at a complete loss as to what libraries I should even be using.

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• Return NSWindow to Normal Level

  - by PF1

  Hi Everyone: I have an NSWindow that I want to go above the captured kCGDirectMainDisplay when a function is run and have the window go back to its normal level after the display is released. My code works for capturing the display, setting the window's level, and releasing the display, however once the display is released, the window floats above all other windows. I have included my method of doing this, in case I am doing something wrong. Capture the display CGDisplayCapture(kCGDirectMainDisplay); [self.window setLevel:CGShieldingWindowLevel()]; Release the display CGDisplayRelease(kCGDirectMainDisplay) [self.window setLevel:NSNormalWindowLevel]; Thanks for any help!

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• iPhone: How do I override the back button in a Navigation Controller?

  - by Angelo Stracquatanio

  Hello, In my app I have a basic Navigation Controller. For all of my views, except one, the controller works as it should. However, for one view in particular, I would like the 'back' button to not go back to the previous view, but to go to one I set. In particular it is going to go back 2 views and skip over one. After doing some research I found that I can intercept the view when it disappears, so I tried to put in code to have it navigate to the page I would like: - (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; //i set a flag to know that the back button was pressed if (viewPushed) { viewPushed = NO; } else { // Here, you know that back button was pressed mainMenu *mainViewController = [[mainMenu alloc] initWithNibName:@"mainMenu" bundle:nil]; [self.navigationController pushViewController:mainViewController animated:YES]; [mainViewController release]; } } That didn't work, so does anyone have any ideas? Thanks!!

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• how to get series of pictures?

  - by rmaster

  i have problems with this, recently i have also problem with just taking 1 photo... do you know how to solve it? any working code? i'm doing it like that: mCamera = Camera.open(); Log.e(TAG, "onCreate"); mCamera.takePicture(null, mPictureCallback, mPictureCallback); Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() { public void onPictureTaken(byte[] imageData, Camera c) { if (imageData != null) { //process photo } } }; in onDestroy() i release the camera on simulator it works, on telephone - 1st time runs without problems but no picture, second and next times - 'force close' - looks like camera is not released ...

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• OpenCL support on Leopard

  - by koan

  I want to use OpenCL in my software but I am running Leopard. I will probably update to Snow Leopard later. In the mean time I would like to get started with OpenCL in Leopard. Setting up on 10.5 is confusing: most SDKs and articles assume that you must be using Snow Leopard. Searching for "Using OpenCL on Leopard" is completely useless, as you would expect. I downloaded the cuda toolkit, devdriver and gpucomputing SDK from nvidia but the examples won't compile because OpenCL/opencl.h is not found. The OpenCL release notes don't mention MacOSX so again I think this is assuming that all Mac users are running Snow Leopard. Where can I find OpenCL includes and libraries for Mac OSX 10.5 ? Or, is this just a waste of time and I should go and get Snow Leopard ASAP ? After upgrading to Snow Leopard I would like my software to support Leopard. Is this possible ?

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• Why exactly is calling the destructor for the second time undefined behavior in C++?

  - by sharptooth

  As mentioned in this answer simply calling the destructor for the second time is already undefined behavior 12.4/14(3.8). For example: class Class { public: ~Class() {} }; // somewhere in code: { Class* object = new Class(); object->~Class(); delete object; // UB because at this point the destructor call is attempted again } In this example the class is designed in such a way that the destructor could be called multiple times - no things like double-deletion can happen. The memory is still allocated at the point where delete is called - the first destructor call doesn't call the ::operator delete() to release memory. For example, in Visual C++ 9 the above code looks working. Even C++ definition of UB doesn't directly prohibit things qualified as UB from working. So for the code above to break some implementation and/or platform specifics are required. Why exactly would the above code break and under what conditions?

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• [java] Threading socket handler for two sided communication in tcp port

  - by raven

  I want to make a chat which will be programed in java. one computer will host the server and the other one will initiate the socket [tcp port]. now from what I read there should be a loop that will constantly read the socket which means it will make the code stuck. I have a button that is 'actionperformed' on mouse release, I want to know if it will work along with the loops that constantly reads the socket so that it will also send the infromation I wrote. If I must thread it, I want to know if the run() method must be void because if I thread it it will mean creating a new class, and the whole GUI is one big class which includes a text area, and it's private. also how can I extract the information from the socket directly to the text area? lets say the textarea variable is called "chatOutput". thx :)

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• Losing a programmer, what steps to take?

  - by Zak

  One of the programmers on our team is leaving for greener pastures. We will be going from 6 to 5. What steps should we take to ensure our development process continues to run smoothly, potentially while integrating in new blood. We are currently working on a short release cycle with iterative development. Design - code - review. The person leaving was the most senior dev on the team, and would often give lots of feedback to the rest of the team, especially during the design phase.

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• Why do I get "2010-01-01 00:00:00 +900" from "2010-12-31 15:00:00 +000"?

  - by mikezang

  I have NSDate, it will be shown as below if I used NSLog(@"%@", date.description); 2010-12-31 15:00:00 +0000 it will be shown as if I used NSLog(@"%@", [date descriptionWithLocale:[[NSLocale currentLocale] localeIdentifier]]); Saturday, January 1, 2011 12:00:00 AM Japan Standard Time But it will be show as below if I used NSLog(@"%@", [date formattedDateString]); 2010-01-01 00:00:00 +0900 Where do I make mistake? (NSString *)formattedDateString { return [self formattedStringUsingFormat:@"YYYY-MM-dd HH:mm:ss ZZZ"]; } (NSString *)formattedStringUsingFormat:(NSString *)dateFormat { NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:dateFormat]; NSString *ret = [formatter stringFromDate:self]; [formatter release]; return ret; }

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• How to stop an activity with GL view. Application not responding

  - by David

  I have an activity that I want to programmatically stop after some elapsed time. I have a GL view running. My understanding is that the GLSurfaceView.renderer is running in its own thread, so I created a handler instantiated from the activity. In the GLSurfaceView I post a message. The handler then attempts to stop the activity with the following: onStop(); finish(); The activity seems to close. However, if I try to restart the application, I get a blank screen, the phone is practically locked up and eventually I get a message that the activity in the application is not responding. I'm also getting geting a wake lock, ie PowerManager.newWakeLock(...). When I try to release it, I get an exception. Not sure if its the GL view of the wake lock which is causing me troubles. Any ideas appreciated.

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• Reading data from a plist file

  - by K2Digital

  I'm trying to implement a Save State for my iPhone App. I've got a plist file called SaveData.plist and I can read it in via the following NSString *pListPath2 = [bundle pathForResource:@"SaveData" ofType:@"plist"]; NSDictionary *dictionary2 = [[NSDictionary alloc] initWithContentsOfFile:pListPath2]; self.SaveData = dictionary2; [dictionary release]; The Plist file has members SavedGame which is a Boolean to tell the app if there really is valid data here (if they did not exit the app in the middle of a game, I don't want their to be a Restore Point. Score which is an NSNumber. Time which is an NSNumber Playfield which is a 16 element array of NSNumbers How do I access those elements inside of the NSDictionary?

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• Will Visual Studio 2010 support HTML 5?

  - by Chris

  Since Visual Studio 2010 is slated for release in March of 2010 and HTML 5 is now starting to be used even more widely, I would like to know if Visual Studio will ship with HTML 5 templates, standard controls and support for the more common markup? A definition for support of HTML 5 would be that any new version of Visual Studio should have similar support for code-completion, validation and markup that is currently supported for HTML 4.01 and XHTML 1.0 and 1.1. Update From the Visual Web Develolper Team Blog: HTML 5 intellisense and validation schema for Visual Studio 2008 and Visual Web Developer is for downloading. Follow the instructions posted on the page to install the new scheme. Seems like the Visual Studio Team will be supporting HTML 5 after all.

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• How i solve memory leak problem?

  - by RRB

  Hi, I developing an simple application in which design or make code in which i creating and instance object of UIImage. When i swip on Ipad screen it make up an image of the sreen and that image i render into UIImage object after that this image i set into UIImageView object and UIimage object is released. Every time i swipe on the screen and above process is does again and again. But it give me leak in renderImage = [[UIImage alloc] init];. Code, _renderImage = [[UIImage alloc] init]; _textImageV = [[UIImageView alloc] init]; [self renderIntoImage]; -(void)renderIntoImage { UIGraphicsBeginImageContext(bgTableView.bounds.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; _renderImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); } _textImageV.image = _renderImage; [_renderImage release]; after completing the process of swipe i also releasing _textImageV. How i solve the memory leak problem in UIImage *_renderImage?

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• How to invert arrow image placed before the first cell when tableview cells are swiped beyond first

  - by neha

  Hi all, In my application, I need to add this functionality that there should be an arrow image upside down placed before first cell and some text like "Pull down to refresh" and when user pulls the table beyond this then this arrow gets inverted and text changes to "Release to refresh" and when the user releases his finger, the data is refreshed and rows get added to that point So now this initial arrow and text moves upwards before the first cell again. Can anybody tell me wheather there's any event that does this? Or else which event I need to capture in order to add this functionality? Thanks in advance.

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• Will this make the object thread-safe?

  - by sharptooth

  I have a native Visual C++ COM object and I need to make it completely thread-safe to be able to legally mark it as "free-threaded" in th system registry. Specifically I need to make sure that no more than one thread ever accesses any member variable of the object simultaneously. The catch is I'm almost sure that no sane consumer of my COM object will ever try to simultaneously use the object from more than one thread. So I want the solution as simple as possible as long as it meets the requirement above. Here's what I came up with. I add a mutex or critical section as a member variable of the object. Every COM-exposed method will acquire the mutex/section at the beginning and release before returning control. I understand that this solution doesn't provide fine-grained access and this might slow execution down, but since I suppose simultaneous access will not really occur I don't care of this. Will this solution suffice? Is there a simpler solution?

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